<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width" />
        <title>Main</title>
    </head>
    <body>
        <div id="square"></div>
        <div id="square2"></div>
        <div>
            <button id="pause-btn">pause</button>
            <button id="resume-btn">resume</button>
        </div>
    </body>
</html>
